How can energy change
This presentation is the property of its rightful owner.
Sponsored Links
1 / 6

How can energy change? PowerPoint PPT Presentation


  • 36 Views
  • Uploaded on
  • Presentation posted in: General

How can energy change?. Chapter 5, Lesson 2 Pgs. 158-163. Lesson Objective I will know how energy changes form. I will know how electricity changes to light and gives off heat. Vocabulary Words: filament - a thin-coiled resistor that transforms electrical energy into heat and light energy.

Download Presentation

How can energy change?

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


How can energy change

How can energy change?

Chapter 5, Lesson 2

Pgs. 158-163


How can energy change

Lesson Objective

I will know how energy changes form. I will know how electricity changes to light and gives off heat.

Vocabulary Words:

filament- a thin-coiled resistor that transforms electrical energy into heat and light energy.

friction- a force that acts when two surfaces rub together.

resistor- an object that uses energy in a circuit.


How can energy change

  • Energy Changing Form

  • There are many forms of energy-- electricity, light, sound, and energy of motion.

  • Energy is never lost. It cannot be made or destroyed.

  • Energy can transform, or change form.

  • Electricity can change to light. Motion can change to sound. Wind can change to electricity.

  • A lamp transforms electrical energy to light.

  • If you pluck a guitar string, the energy of motion transforms to sound energy.


How can energy change

Light from Electricity

Televisions, computers, and light bulbs all use electricity. These objects are resistors that use the energy in a circuit. Most resistors transform electrical energy to heat and light.

The filament inside a light bulb becomes so hot it glows, also giving off light.


How can energy change

Heat from Electricity

When electrical current passes through a resistor, it often gives off heat. This change is why electrical wires sometimes become hot.

The resistors of some appliances get so hot that they produce a red glow. This glow happens in toasters.


How can energy change

Lesson Summary

Electrical, light, and energy of motion are some forms of energy.

The energy of motion can cause friction and give off heat.

Electrical energy can change to light energy and give off heat.


  • Login